Moving image encoding apparatus, moving image decoding apparatus, moving image encoding method, moving image decoding method, moving image encoding program, moving image decoding program, and moving image encoding/decoding system

A dynamic image and coding device technology, applied in image communication, television, electrical components, etc., can solve the problems of high installation and processing costs

Inactive Publication Date: 2011-08-31
NTT DOCOMO INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a problem in the ease of expansion due to the high installation and

Method used

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  • Moving image encoding apparatus, moving image decoding apparatus, moving image encoding method, moving image decoding method, moving image encoding program, moving image decoding program, and moving image encoding/decoding system
  • Moving image encoding apparatus, moving image decoding apparatus, moving image encoding method, moving image decoding method, moving image encoding program, moving image decoding program, and moving image encoding/decoding system
  • Moving image encoding apparatus, moving image decoding apparatus, moving image encoding method, moving image decoding method, moving image encoding program, moving image decoding program, and moving image encoding/decoding system

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Embodiment Construction

[0047] Below, use Figure 1 to Figure 9 Embodiments according to the present invention will be described. This embodiment is a moving image encoding and decoding system for encoding and decoding moving image data, including: a moving image encoding device for compressing and encoding moving image data; A moving image decoding device for decoding image data. The moving picture encoding device and the moving picture decoding device will be described separately below.

[0048] (moving image encoding device)

[0049] figure 1 A block diagram of a video encoding device 100 with bit length conversion according to an embodiment of the present invention is shown. The moving image encoding device 100 has: an input terminal (input unit) 101, a bit length extension converter (extension conversion unit) 102, a block divider 103, a differentiator (residual signal generation unit) 104, a prediction signal generator (prediction signal generation unit) 105, prediction method determiner 1...

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Abstract

In encoding/decoding of moving images, the efficiency of encoding is enhanced and the expansion is facilitated, while the increases in the capacities of frame memories and in bands are suppressed. A bit length expanding converter (102) converts a target image, the pixel values of which are expressed by use of a bit length (N), to an image the pixel values of which are expressed by use of a bit length (M). A compressor (110) encodes the image converted. A decompressor (111) decompresses the image encoded. A bit length contracting converter (113) converts the image decompressed to a reproduced image the pixel values of which are expressed by use of a bit length (L) shorter than the bit length (M). The reproduced image is then stored, as a reference image, into a frame memory (114).

Description

technical field [0001] The present invention relates to a dynamic image coding device, a dynamic image decoding device, a dynamic image encoding method, a dynamic image decoding method, a dynamic image encoding program, a dynamic image decoding program, and a dynamic image encoding and decoding system for encoding and decoding dynamic images. In particular, a technique associated with the bit length of each pixel of an image processed in encoding and decoding processing. Background technique [0002] In order to efficiently transmit and store video data, compression coding techniques are used. In the case of moving images, MPEG1, 2, 4, and H.261 to H.264 systems are widely used. [0003] In order to improve coding efficiency, an image to be coded is divided into a plurality of blocks, and then predictive coding and decoding are performed. Specifically, an image of one frame is divided into block regions composed of 16×16 pixels. In the intra-frame predictive encoding meth...

Claims

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Application Information

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IPC IPC(8): H04N7/32H04N19/50H04N19/102H04N19/136H04N19/159H04N19/20H04N19/423H04N19/46H04N19/503H04N19/593H04N19/60H04N19/61H04N19/70H04N19/91
CPCH04N7/26287H04N7/26148H04N19/184H04N19/186H04N19/102H04N19/50H04N19/60
Inventor 铃木芳典文仲丞陈朝庆
Owner NTT DOCOMO INC
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